use std::env;

use actix_web::{App, get, HttpResponse, HttpServer, Responder};

use crate::util::warn_println;

mod util;

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    util::print_copyright_notice();

    // Default Server Values
    let mut port = 8000;
    let mut bind_addr = String::from("127.0.0.1");

    // If env variable for port or bind_addr is present use that instead of default.
    if let Ok(env_port) = env::var("PORT") {
        if let Ok(env_port) = env_port.parse::<u16>() {
            port = env_port;
        } else {
            warn_println("Failed to parse PORT env variable using default value.");
        }
    }

    if let Ok(env_addr) = env::var("BIND_ADDR") {
        bind_addr = env_addr;
    }

    util::notice_println(format!("Starting server on {}:{}", bind_addr, port));

    HttpServer::new(|| App::new().service(hello))
        .bind((bind_addr, port))?
        .run()
        .await
}

#[get("/")]
async fn hello() -> impl Responder {
    HttpResponse::Ok().body("Hello World!")
}